无力矩顶油罐的抗震分析
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摘要
计算分析无力矩油罐在强烈地震时的安全度,采用Housner简化计算方法验算油罐的稳定性,综合考虑液体静压荷载、水平地震荷载及由垂直地震加速度引起的罐体和液体压力增值,对无力矩顶油罐进行罐体抗震的稳定验算、强度验算及油罐上部节点强度验算.通过算例测定,现行标准不能使油罐在强烈地震时有可靠的稳定性,应对无力矩顶油罐增加相应措施才能达到抗震要求.
The stability and strength checking methods for the oil tank are proposed by means of simplified Housner calculation method,in which the static load of liquid,horizontal earthquake loads and the increments of the tank weight force and the liquid pressure caused by vertical earthquake acceleration are considered.The checking results of the stability and strength of the tank body and the strength of the upper node of the oil tank show that the current standards can not provide the reliable stability for the tank during strong earthquake,and therefore,necessary measures need to be adopted for meeting the requirement of anti-earthquake to the tank.
The stability and strength checking methods for the oil tank are proposed by means of simplified Housner calculation method,in which the static load of liquid,horizontal earthquake loads and the increments of the tank weight force and the liquid pressure caused by vertical earthquake acceleration are considered.The checking results of the stability and strength of the tank body and the strength of the upper node of the oil tank show that the current standards can not provide the reliable stability for the tank during strong earthquake,and therefore,necessary measures need to be adopted for meeting the requirement of anti-earthquake to the tank.
引文
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[5]李梁峰,林建华.大型储罐抗震能力可靠度评估[J].地震工程与工程振动,2004,24(4):152-157.
[6]任锡泰,杜景林.油田企业贮油(液)罐抗震能力评价方法[J].地震工程与工程振动,2003,23(2):154-158.
[7]沈雄伟,刘春城,曲乃泗.贮油罐的局部动内力研究[J].北京大学学报,2000,6(1):536-539.
[2]陈冠卿.垂直地震荷载在液体储罐设计中的重要性——关于“象腿”的成因[J].油气储运,1982(4):24-29.
[3]刘云贺,胡宝柱.Housner模型在渡槽抗震计算中的适用性[J].水力学报,2002(9):94-99.
[4]居荣初,曾心传.弹性结构与液体的耦联振动理论[M].北京:地震出版社,1983.
[5]李梁峰,林建华.大型储罐抗震能力可靠度评估[J].地震工程与工程振动,2004,24(4):152-157.
[6]任锡泰,杜景林.油田企业贮油(液)罐抗震能力评价方法[J].地震工程与工程振动,2003,23(2):154-158.
[7]沈雄伟,刘春城,曲乃泗.贮油罐的局部动内力研究[J].北京大学学报,2000,6(1):536-539.
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